From 525a65c77db51cf5d6c6d8e3f8d07efeb2270416 Mon Sep 17 00:00:00 2001 From: Alvin Lee Date: Wed, 14 Sep 2022 11:05:17 -0400 Subject: [PATCH] drm/amd/display: Update MALL SS NumWays calculation [Description] Update MALL SS NumWays calculation according to programming guide. Reviewed-by: Jun Lei Acked-by: Jasdeep Dhillon Signed-off-by: Alvin Lee Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dc.h | 1 + .../drm/amd/display/dc/dcn32/dcn32_hwseq.c | 207 ++++++++---------- 2 files changed, 98 insertions(+), 110 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index e01c8f1e9fb8..1716ac504dda 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -835,6 +835,7 @@ struct dc_debug_options { bool force_subvp_mclk_switch; bool allow_sw_cursor_fallback; unsigned int force_subvp_num_ways; + unsigned int force_mall_ss_num_ways; bool alloc_extra_way_for_cursor; bool force_usr_allow; /* uses value at boot and disables switch */ diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c index 2242c87f7962..0be0223f21bd 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c @@ -49,6 +49,7 @@ #include "dcn20/dcn20_optc.h" #include "dmub_subvp_state.h" #include "dce/dmub_hw_lock_mgr.h" +#include "dcn32_resource.h" #include "dc_link_dp.h" #include "dmub/inc/dmub_subvp_state.h" @@ -198,42 +199,6 @@ static bool dcn32_check_no_memory_request_for_cab(struct dc *dc) return false; } -/* This function takes in the start address and surface size to be cached in CAB - * and calculates the total number of cache lines required to store the surface. - * The number of cache lines used for each surface is calculated independently of - * one another. For example, if there is a primary surface(1), meta surface(2), and - * cursor(3), this function should be called 3 times to calculate the number of cache - * lines used for each of those surfaces. - */ -static uint32_t dcn32_cache_lines_for_surface(struct dc *dc, uint32_t surface_size, uint64_t start_address) -{ - uint32_t lines_used = 1; - uint32_t num_cached_bytes = 0; - uint32_t remaining_size = 0; - uint32_t cache_line_size = dc->caps.cache_line_size; - uint32_t remainder = 0; - - /* 1. Calculate surface size minus the number of bytes stored - * in the first cache line (all bytes in first cache line might - * not be fully used). - */ - div_u64_rem(start_address, cache_line_size, &remainder); - num_cached_bytes = cache_line_size - remainder; - remaining_size = surface_size - num_cached_bytes; - - /* 2. Calculate number of cache lines that will be fully used with - * the remaining number of bytes to be stored. - */ - lines_used += (remaining_size / cache_line_size); - - /* 3. Check if we need an extra line due to the remaining size not being - * a multiple of CACHE_LINE_SIZE. - */ - if (remaining_size % cache_line_size > 0) - lines_used++; - - return lines_used; -} /* This function loops through every surface that needs to be cached in CAB for SS, * and calculates the total number of ways required to store all surfaces (primary, @@ -241,96 +206,116 @@ static uint32_t dcn32_cache_lines_for_surface(struct dc *dc, uint32_t surface_si */ static uint32_t dcn32_calculate_cab_allocation(struct dc *dc, struct dc_state *ctx) { - uint8_t i, j; + uint8_t i; + int j; struct dc_stream_state *stream = NULL; struct dc_plane_state *plane = NULL; - uint32_t surface_size = 0; uint32_t cursor_size = 0; - uint32_t cache_lines_used = 0; uint32_t total_lines = 0; uint32_t lines_per_way = 0; - uint32_t num_ways = 0; - uint32_t prev_addr_low = 0; + uint8_t num_ways = 0; + uint8_t bytes_per_pixel = 0; + uint8_t cursor_bpp = 0; + uint16_t mblk_width = 0; + uint16_t mblk_height = 0; + uint16_t mall_alloc_width_blk_aligned = 0; + uint16_t mall_alloc_height_blk_aligned = 0; + uint16_t num_mblks = 0; + uint32_t bytes_in_mall = 0; + uint32_t cache_lines_used = 0; + uint32_t cache_lines_per_plane = 0; - for (i = 0; i < ctx->stream_count; i++) { - stream = ctx->streams[i]; + for (i = 0; i < dc->res_pool->pipe_count; i++) { + struct pipe_ctx *pipe = &dc->current_state->res_ctx.pipe_ctx[i]; - // Don't include PSR surface in the total surface size for CAB allocation - if (stream->link->psr_settings.psr_version != DC_PSR_VERSION_UNSUPPORTED) + if (!pipe->stream || !pipe->plane_state || + pipe->stream->link->psr_settings.psr_version != DC_PSR_VERSION_UNSUPPORTED || + pipe->stream->mall_stream_config.type == SUBVP_PHANTOM) continue; - if (ctx->stream_status[i].plane_count == 0) - continue; + bytes_per_pixel = pipe->plane_state->format >= SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616 ? 8 : 4; + mblk_width = DCN3_2_MBLK_WIDTH; + mblk_height = bytes_per_pixel == 4 ? DCN3_2_MBLK_HEIGHT_4BPE : DCN3_2_MBLK_HEIGHT_8BPE; - // For each stream, loop through each plane to calculate the number of cache - // lines required to store the surface in CAB - for (j = 0; j < ctx->stream_status[i].plane_count; j++) { - plane = ctx->stream_status[i].plane_states[j]; + /* full_vp_width_blk_aligned = FLOOR(vp_x_start + full_vp_width + blk_width - 1, blk_width) - + * FLOOR(vp_x_start, blk_width) + * + * mall_alloc_width_blk_aligned_l/c = full_vp_width_blk_aligned_l/c + */ + mall_alloc_width_blk_aligned = ((pipe->plane_res.scl_data.viewport.x + + pipe->plane_res.scl_data.viewport.width + mblk_width - 1) / mblk_width * mblk_width) + + (pipe->plane_res.scl_data.viewport.x / mblk_width * mblk_width); + + /* full_vp_height_blk_aligned = FLOOR(vp_y_start + full_vp_height + blk_height - 1, blk_height) - + * FLOOR(vp_y_start, blk_height) + * + * mall_alloc_height_blk_aligned_l/c = full_vp_height_blk_aligned_l/c + */ + mall_alloc_height_blk_aligned = ((pipe->plane_res.scl_data.viewport.y + + pipe->plane_res.scl_data.viewport.height + mblk_height - 1) / mblk_height * mblk_height) + + (pipe->plane_res.scl_data.viewport.y / mblk_height * mblk_height); - // Calculate total surface size - if (prev_addr_low != plane->address.grph.addr.u.low_part) { - /* if plane address are different from prev FB, then userspace allocated separate FBs*/ - surface_size += plane->plane_size.surface_pitch * - plane->plane_size.surface_size.height * - (plane->format >= SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616 ? 8 : 4); + num_mblks = ((mall_alloc_width_blk_aligned + mblk_width - 1) / mblk_width) * + ((mall_alloc_height_blk_aligned + mblk_height - 1) / mblk_height); - prev_addr_low = plane->address.grph.addr.u.low_part; - } else { - /* We have the same fb for all the planes. - * Xorg always creates one giant fb that holds all surfaces, - * so allocating it once is sufficient. - * */ - continue; - } - // Convert surface size + starting address to number of cache lines required - // (alignment accounted for) - cache_lines_used += dcn32_cache_lines_for_surface(dc, surface_size, - plane->address.grph.addr.quad_part); - - if (plane->address.grph.meta_addr.quad_part) { - // Meta surface - cache_lines_used += dcn32_cache_lines_for_surface(dc, surface_size, - plane->address.grph.meta_addr.quad_part); - } - } + /* For DCC: + * meta_num_mblk = CEILING(full_mblk_width_ub_l*full_mblk_height_ub_l*Bpe/256/mblk_bytes, 1) + */ + if (pipe->plane_state->dcc.enable) + num_mblks += (mall_alloc_width_blk_aligned * mall_alloc_width_blk_aligned * bytes_per_pixel + + (256 * DCN3_2_MALL_MBLK_SIZE_BYTES) - 1) / (256 * DCN3_2_MALL_MBLK_SIZE_BYTES); - // Include cursor size for CAB allocation - for (j = 0; j < dc->res_pool->pipe_count; j++) { - struct pipe_ctx *pipe = &ctx->res_ctx.pipe_ctx[j]; - struct hubp *hubp = pipe->plane_res.hubp; + bytes_in_mall = num_mblks * DCN3_2_MALL_MBLK_SIZE_BYTES; - if (pipe->stream && pipe->plane_state && hubp) - /* Find the cursor plane and use the exact size instead of - * using the max for calculation - */ - if (hubp->curs_attr.width > 0) { - // Round cursor width to next multiple of 64 - cursor_size = (((hubp->curs_attr.width + 63) / 64) * 64) * hubp->curs_attr.height; - break; - } - } + /* (cache lines used is total bytes / cache_line size. Add +2 for worst case alignment + * (MALL is 64-byte aligned) + */ + cache_lines_per_plane = bytes_in_mall / dc->caps.cache_line_size + 2; + cache_lines_used += cache_lines_per_plane; + } - switch (stream->cursor_attributes.color_format) { - case CURSOR_MODE_MONO: - cursor_size /= 2; - break; - case CURSOR_MODE_COLOR_1BIT_AND: - case CURSOR_MODE_COLOR_PRE_MULTIPLIED_ALPHA: - case CURSOR_MODE_COLOR_UN_PRE_MULTIPLIED_ALPHA: - cursor_size *= 4; - break; + // Include cursor size for CAB allocation + for (j = 0; j < dc->res_pool->pipe_count; j++) { + struct pipe_ctx *pipe = &ctx->res_ctx.pipe_ctx[j]; + struct hubp *hubp = pipe->plane_res.hubp; - case CURSOR_MODE_COLOR_64BIT_FP_PRE_MULTIPLIED: - case CURSOR_MODE_COLOR_64BIT_FP_UN_PRE_MULTIPLIED: - cursor_size *= 8; - break; - } + if (pipe->stream && pipe->plane_state && hubp) + /* Find the cursor plane and use the exact size instead of + using the max for calculation */ - if (stream->cursor_position.enable && !dc->debug.alloc_extra_way_for_cursor && - cursor_size > 16384) { - cache_lines_used += dcn32_cache_lines_for_surface(dc, cursor_size, - plane->address.grph.cursor_cache_addr.quad_part); - } + if (hubp->curs_attr.width > 0) { + // Round cursor width to next multiple of 64 + cursor_size = (((hubp->curs_attr.width + 63) / 64) * 64) * hubp->curs_attr.height; + + switch (pipe->stream->cursor_attributes.color_format) { + case CURSOR_MODE_MONO: + cursor_size /= 2; + cursor_bpp = 4; + break; + case CURSOR_MODE_COLOR_1BIT_AND: + case CURSOR_MODE_COLOR_PRE_MULTIPLIED_ALPHA: + case CURSOR_MODE_COLOR_UN_PRE_MULTIPLIED_ALPHA: + cursor_size *= 4; + cursor_bpp = 4; + break; + + case CURSOR_MODE_COLOR_64BIT_FP_PRE_MULTIPLIED: + case CURSOR_MODE_COLOR_64BIT_FP_UN_PRE_MULTIPLIED: + cursor_size *= 8; + cursor_bpp = 8; + break; + } + + if (pipe->stream->cursor_position.enable && !dc->debug.alloc_extra_way_for_cursor && + cursor_size > 16384) { + /* cursor_num_mblk = CEILING(num_cursors*cursor_width*cursor_width*cursor_Bpe/mblk_bytes, 1) + */ + cache_lines_used += (((hubp->curs_attr.width * hubp->curs_attr.height * cursor_bpp + + DCN3_2_MALL_MBLK_SIZE_BYTES - 1) / DCN3_2_MALL_MBLK_SIZE_BYTES) * + DCN3_2_MALL_MBLK_SIZE_BYTES) / dc->caps.cache_line_size + 2; + } + break; + } } // Convert number of cache lines required to number of ways @@ -360,7 +345,9 @@ static uint32_t dcn32_calculate_cab_allocation(struct dc *dc, struct dc_state *c } } } - + if (dc->debug.force_mall_ss_num_ways > 0) { + num_ways = dc->debug.force_mall_ss_num_ways; + } return num_ways; } -- 2.34.1